Both AR-727-CM-0804M & AR-401-IO-0808R-U2 are Serial Devices Server that support transparent transmission of Ethernet-to-RS485, but there are some functions and feature that each unit provides better solution than the other.
Below is the parameter difference:
| Parameter | AR-727-CM-IO- 0804M
| AR-401-IO-0808R-U2
| |
| Interface | Ethernet | 10/100 Mbps Base T Ethernet <--> RS485 | support TCP/Server,TCP/Client, UDP Mode |
| Serial port | RS485 X2 Baud Rate 2400 bps - 115200 bps (By order: RS232, RS232+RS485) Auto detect Support TCP/Sever, TCP/Client, UDP Mode | RS485 X 2, support TCP/Server,TCP/Client, UDP Mode | |
| Baud Rate | 4800 bps -115200 bps | 4800 bps -115200 bps | |
| Inputs | 8 Digital Input | 8 Digital Input | |
| Outputs | 4 Digital Output : 1 Relay Output (Form C) 1A/30VDC + 3DO | 8 Relay Output (5A/250VAC,5A/30VDC) | |
| WG port (Note 1) | DO-1 & DO-2 Output WG 128bits maximum, supporting user defined format,auto add even parity bit and odd parity bit and various format, etc. | — | |
| PoE | — | PoE option,12W/1A | |
| Isolation | No | Input optical isolation 5kV | |
| UART | No | Yes,1 Unit | |
| Housing | PC (incl. DIN TS-35 mount panel) | Panel Mounting Base | |
| Suitable For | – Sensor or detector monitoring status – Suitable for small to medium installation that required moderate monitoring status | – Sensor or detector monitoring status and remote control – Suitable for medium to big installation that required huge amount of monitoring status and remote control over output | |
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Note 1: AR-727-CM-0804M firmware of TCP/IP to Wiegand data transmission firmware upgrade to set it into low speed:
| No. | Firmware Function | Firmware file name |
| 3 | Standard Firmware-Suitable for low speed Wiegand data transmission device (Support Modbus TCP To Modbus RTU、Local I/O Support Modbus TCP command、TCP/IP To Wiegand) | APX727i3___V0503 8i4o 220523 WG2m500.STM |
Other extended function that supported by both model no. AR-727-CM-0804M & AR-401-IO-0808R-U2 just by procedure of firmware upgrade is as listed below:
| No. | Firmware Function | AR-727-CM-0804M Firmware file name | AR-401-IO-0808R-U2 Firmware file name | Additional Information |
| 1. | Standard Firmware Note: – As transparent data transmission – I/O works under SOYAL Protocol (Port 1601) and Modbus Protocol (Port 502) – Support TCP/IP to Wiegand (DO0 & DO1 as WG0 and WG1) function (this feature only for AR-727-CM-0804M) | APX727i3___V0503 8I4o 220425.STM | APX727i3___V0503 8i8o 220425.STM | — |
| 2. | Active Push Communciation DI Event via TCP | APX727i3___V0503 8I4O 220523 DI_EVENT_XCHG.STM | APX727i3___V0503 8I8O 220523 DI_EVENT_XCHG.STM | Example of application in Remote Home Monitoring à here |
| 2.Example in【Remote Home Care Monitoring Polling-Free Auto Update Monitoring Status】application
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| 3. | Expandable Daisy-Chained Ethernet I/O over 256 DI and 256 DO that is compatible with standard Modbus and SCADA graphic control | — | APX727i3___V0503 8i8o 220225 CH2_SCAN_RCU.STM | CH1 as transparent transmission / wire to Modbus device, CH2 as Remote Control Unit (RCU) More detail à here |
| 3.Example in【Smart Building Monitor system】application
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| 4. | Expandable Daisy-Chained Ethernet I/O over 256 DI and 256 DO includes Active Push Communciation DI Event via TCP functionr | APX727i3___V0503 8I4O 220523 RCU_SCAN DI_EVENT_XCHG.STM | APX727i3___V0503 8I8O 220523 RCU_SCAN DI_EVENT_XCHG.STM | Option 1 & Option 2 combined |
| 5. | Support Fire Alarm Event UDP Mode | APX727i3___V0503 8I4o 220425 UDP FireMessage.STM | APX727i3___V0503 8I8o 220425 UDP FireMessage.STM | Refer to Manual 3-2-2 |
| 5.Example in【Fire Alarm Auto Release Door Open】application
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| 6. | Local DI status open/close is changed and the corresponding Local DO status on/off will be changed at the same time (within one unit). | — | Edge Type: Level Type: | — |
| 6.Example in【Restroom Emergency Alert: 701ClientSQL Graphic Animation Control】application Edge Type :
6.Example in【Local I/O Linkage Control Application】application Level Type :
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| 7. | Local DI status open/close is changed and the corresponding Remote DO status on/off will be changed at the same time. | — | Level Type: APX727i3___V0503 8i8o 220523 DIx_DOx_LEVEL_REMOTE.STM | Refer to Manual 3-3 |
| 7.Example in【Local I/O Linkage Control Application】application
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